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Chemistry
Page 98
Questions (96,857)
If you produce 3.63 moles of Na2, how many moles of H2 was needed?
1 answer
asked by
Joni
453 views
A 5.00L steel cylinder is filled with water vapor at 650mmHg and 100C. Calculate the density of the gas.
1 answer
asked by
Anonymous
401 views
how many grams are in 12.5 moles of chlorine (gas)?
5 answers
asked by
Help
386 views
Please help me solve this problem:
What is the value of the equilibrium constant (K) for the reaction below 25^o C? 3I2(s) +
4 answers
asked by
Shylo
411 views
what is the mole fraction of solute molality concertration for an aqueous solution that is 19% NaOH by mass?
1 answer
asked by
Josh
421 views
The boiling point of an aq solution 102.11 C. What is the freezing point?
3 answers
asked by
Josh
416 views
5.00 liter steel cylinder is filled with water vapor at 100 °C and 650 mm Hg.
Determine the mass of water that condenses to a
1 answer
asked by
Anonymous
443 views
A solution contains 153g Na3PO4 and 415g H2O. What is the percentage concentration of Na3PO4 in this solution
1 answer
asked by
wj
371 views
What is the molarity of a solution containing 40 grams of NaOH in 100 ml of soution
1 answer
asked by
corinna
369 views
How many grams of NaCl are neeeded to make 100ml of a 2M solution of NaCl
1 answer
asked by
corinna
393 views
Three acids,HCl, H2SO4 and H3PO4 are all 6M in concentration. what are their normalities
1 answer
asked by
wj
327 views
What mass of water, in grams, would have to be decomposed to produce 13.3 L of molecular oxygen at STP?
How do I go about doing
1 answer
asked by
Bradley
428 views
1 NHzSO4 is what molarity
3 answers
asked by
Colby
256 views
37 grams of Ca(OH)2 in 500 ml of solution is
1 answer
asked by
Colby
310 views
The rate constant for this first-order reaction is 0.440 s-1 at 400 C.
A to products How long in seconds would it take for
1 answer
asked by
Josh
427 views
how many mL of 2.0 M NaOH are required to get 100 g of NaOH?
1 answer
asked by
Elizabeth
410 views
how many mL of 2.0 M NaOH are required to get 100 g of NaOH?
1 answer
asked by
Elizabeth
253 views
The Managing Director of a well-known company on Wall Street thrives on a diet of fruit jam, bread, pasta, and coffee. She
1 answer
asked by
mema
422 views
How many grams of Ba(OH)2 must be added to 2.37L of water to make a saturated solution? I got 2.03 grams. Is this correct?
1 answer
asked by
Tyler
397 views
I wont to get concentartion by using A weight of chemical material and chemical formula.
1 answer
asked by
Haider
325 views
How calculate concentration by using molecular weight.
1 answer
asked by
Adam
297 views
The rate constant for this first order reaction is 0.440s-1at 400 C.
A to products How long(in seconds) would it take for the
1 answer
asked by
Josh
381 views
Hi. How would I determine the rate constant of a reactant?
1 answer
asked by
Josh
250 views
A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x in
1 answer
asked by
Norma
409 views
What mass of water, in grams, would have to be decomposed to produce 25.1 L of molecular oxygen at STP?
1 answer
asked by
Katie
336 views
At a certain temperature, 0.660 mol of SO3 is placed in a 3.00 L container.
2SO3=>2SO2+O2 Kc=
2 answers
asked by
Josh
552 views
If the Ka of a monoprotic weak acid is 4.3*10^-6, what is the pH of a 0.16 M solution of this acid?
1 answer
asked by
Josh
352 views
What volume of liquid water is produced from the combustion of 10.00 L of octane, C8H18? (density of octane=0.692 g/mL
1 answer
asked by
Kelly
412 views
If a buffer solution is 0.200M in a weak acid (Ka=1.6*10^-5)and 0.480 M in its conjugate base what should the pH be?
1 answer
asked by
Josh
368 views
How do i calculate plate number, distribution constant, mobile phase and stationary phase volume for tlc not HPLC/ GC
1 answer
asked by
Pharmacy
373 views
What is the value of the equilibrium constant for the dissociation of acetic acid's proton? What does this value tell you?
1 answer
asked by
tara
318 views
How do the number of electrons found in the element’s outer shell relate to their position in the period table?
-- I have an
1 answer
asked by
Jordan
339 views
for a particular reaction H=-28.4 KJ and S=-87.9 J/K. Assuming these values change very little with temperture, over what
1 answer
asked by
Joshue
381 views
How many moles of H atoms are there in 33.4282 grams of C2H4Cl2?
3 answers
asked by
Brooke
296 views
If it were determined that there were 6.391 x 10^22 atoms of H in an unknown sample of C2H4Cl2, how many milligrams would the
3 answers
asked by
Brooke
413 views
If you have 1 sack of cotton (which is expected to float on water) and were asked to measure the volume, what will you do?
1 answer
asked by
Kian
274 views
You are given 73 mL of CO2 at 0.69 atm. What volume (in mL) would the CO2 occupy at 0.67 atm if the temperature is maintained at
1 answer
asked by
Kyle
272 views
When oxygen expands from the liquid to gaseous state how much more volume does it occupy?
3 answers
asked by
Janet
322 views
Determine the pH of a .50 M solution of H2S04 and also determine the concentration of the sulfate ion (SO42-)
3 answers
asked by
Hoot
400 views
If a sample of K3PO4 is found to contain 1.81 grams of K+ ions, how many PO3- 4 ions are present?
1 answer
asked by
Heather
394 views
How many kg. of salt needed to be dissolve in 3 liters of water to prepare 80 percent salt solution?
1 answer
asked by
Ivyl
352 views
A gas at a temperature of 95 degrees C occupies a volume of 159 mL. Assuming constant pressure, determine the volume at 15
1 answer
asked by
Tina
348 views
How many milliliters of a 0.1 Molar NaOH solution is needed to neutralize 1 liter of lemonade containing 25% citric acid?
1 answer
asked by
Katie
404 views
A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease.
•State the chemical
1 answer
asked by
sally
407 views
A robust first grader goes for swimming lessons three times a week,and he enjoys it thoroughly.During the first week of
1 answer
asked by
ROCKY
420 views
Describe the physical and chemical changes that occur in grains during cooking.
3 answers
asked by
Tootsie
342 views
Help :)
I got this Chem homework to research on the Taxonomy of Living Things and on the species to kingdom. Anyone can help
1 answer
asked by
Jess
312 views
give the reaction when lead nitrate is heated
1 answer
asked by
gallium
369 views
The approximate pKa values for the three dissociating groups of lysince are 2.2, 9.0, 10.5. What would the pH after addition of
1 answer
asked by
Mabel
302 views
How many grams of hydrogen can be produced by the electrolysis of water with a current of 0.290 A running for 5.00 min?
1 answer
asked by
Heidi
435 views
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